Describe how to prepare crystals of sodium nitrate starting with 200 cm³ of 2M sodium hydroxide, and write…

Question

Describe how to prepare crystals of sodium nitrate starting with 200 cm³ of 2M sodium hydroxide, and write the equation for heating solid sodium nitrate.

ScanSolve AI Tutor · Accepted Answer

Here are the answers to your questions:

ii) Describe how you would prepare crystals of sodium nitrate starting with $200\text{ cm}^3$ of $2\text{M}$ sodium hydroxide.

Measure $200\text{ cm}^3$ of $2\text{M}$ sodium hydroxide solution into a beaker.
Add $2\text{M}$ nitric acid dropwise to the sodium hydroxide solution while stirring, using an indicator (e.g., phenolphthalein) to determine the neutralization point.
Repeat the experiment without the indicator, mixing the exact volumes of sodium hydroxide and nitric acid determined in Step 2.
Gently heat the resulting sodium nitrate solution to evaporate most of the water until it is saturated (crystallization point).
Allow the concentrated solution to cool slowly, causing sodium nitrate crystals to form.
Filter the crystals, wash them with a small amount of cold distilled water, and dry them between filter papers.
iii) Write an equation for the reaction that takes place when a solid sample of sodium nitrate is heated.
$2\text{NaNO}_3\text{(s)} \xrightarrow{\Delta} 2\text{NaNO}_2\text{(s)} + \text{O}_2\text{(g)}$
6. The flow chart below shows some reactions starting with lead (II) carbonate. Study it and answer the questions that follow.

i) State the condition necessary in step 1.
Heating

ii) Identify
I Reagent K
Nitric acid ( $\text{HNO}_3$ )

Describe how to prepare crystals of sodium nitrate starting with 200 cm³ of 2M sodium hydroxide, and write the equation for heating solid sodium nitrate.

Step-by-step solution

Measure $200\text{ cm}^3$ of $2\text{M}$ sodium hydroxide solution into a beaker.

Add $2\text{M}$ nitric acid dropwise to the sodium hydroxide solution while stirring, using an indicator (e.g., phenolphthalein) to determine the neutralization point.

Repeat the experiment without the indicator, mixing the exact volumes of sodium hydroxide and nitric acid determined in Step 2.

Gently heat the resulting sodium nitrate solution to evaporate most of the water until it is saturated (crystallization point).

Allow the concentrated solution to cool slowly, causing sodium nitrate crystals to form.

Filter the crystals, wash them with a small amount of cold distilled water, and dry them between filter papers.

Still stuck on this one?

More Chemistry Questions

Describe how to prepare crystals of sodium nitrate starting with 200 cm³ of 2M sodium hydroxide, and write the equation for heating solid sodium nitrate.

Step-by-step solution

Measure 200 cm3200\text{ cm}^3200 cm3 of 2M2\text{M}2M sodium hydroxide solution into a beaker.

Add 2M2\text{M}2M nitric acid dropwise to the sodium hydroxide solution while stirring, using an indicator (e.g., phenolphthalein) to determine the neutralization point.

Repeat the experiment without the indicator, mixing the exact volumes of sodium hydroxide and nitric acid determined in Step 2.

Gently heat the resulting sodium nitrate solution to evaporate most of the water until it is saturated (crystallization point).

Allow the concentrated solution to cool slowly, causing sodium nitrate crystals to form.

Filter the crystals, wash them with a small amount of cold distilled water, and dry them between filter papers.

Still stuck on this one?

More Chemistry Questions

Measure $200\text{ cm}^3$ of $2\text{M}$ sodium hydroxide solution into a beaker.

Add $2\text{M}$ nitric acid dropwise to the sodium hydroxide solution while stirring, using an indicator (e.g., phenolphthalein) to determine the neutralization point.